MODELS SR AND SRT DISTRIBUTION. DESCRIPTION This section contains information on the distribution system. The fuel distribution system consists of electric and mechanical (engine-driven) fuel pumps, fuel gascolator, fuel hose, fuel lines, fuel selector valve, and fuel pump switches. A. Gascolator - Serials -000 thru -709, -70 thru -40 after SB X-8-08 R or higher, -4 & subs, T-000 & subs A gascolator is installed on the forward side of the firewall after the electric fuel pump and before the engine driven fuel pump. A drain valve, connected to the bowl of the gascolator, is used to drain off contaminates during the preflight inspection. The gascolator provides 00 to 40 micron filtration and has a 4.9 fluid ounce (44.89 milliliters) bowl capacity. The filter element can be cleaned or replaced when the bowl is removed. B. Gascolator - Serials -70 thru -40 before SB X-8-08 R or higher A gascolator is installed on the forward side of the firewall after the electric fuel pump and before the engine driven fuel pump. A drain valve, connected to the bowl of the gascolator, is used to drain off contaminates during the preflight inspection. The gascolator provides 0 micron filtration and has a 6.7 fluid ounce (98.4 milliliters) bowl capacity. The gascolator contains a filter bypass that is activated when pressure drop through the filter reaches.0 ±0. PSI. The filter element cannot be cleaned. The filter element can be replaced when the bowl is removed. Serials -70 thru -06 thru -40 w/o Perspective Avionics before SB X-8-08 R or higher: Prior to bypassing fuel, the gascolator indicates that the pressure drop is becoming greater than normal with a mechanical pop-up tab indicator. The red pop-up tab extends 0.5 inch (6.5 mm) out of the top of the assembly at 0.8 ±0. PSI and remains extended until manually reset. Serials -06 thru -40 w/ Perspective Avionics before SB X-8-08 R or higher: Fuel flow is measured at the gascolator and the signal sent to the Engine Airframe Unit, processed, and transmitted to the Engine Indicating System for display. Note: The majority of all fuel system problems are directly related to contaminated fuel. Therefore, inspecting and cleaning the fuel drains and filter in the gascolator should be considered to be of utmost importance. Under normal operating conditions, the fuel drains and filter in the gascolator should be inspected and cleaned as indicated in Chapter 5. If the airplane is used in dusty or dirty environments, the fuel drains and filter in the gascolator should be cleaned more often. Serials -70 thru -40 before SB X-8-08 R or higher: If significant contamination is noted during preflight sump check, the filter element should be replaced. The engine-driven fuel pump is mounted to the aft side of the engine. An electric fuel pump is installed on the forward side of the firewall. Serials -000 & subs: Mounted on the center console (adjacent to the fuel selector valve) is a Fuel Pump BOOST-OFF-(PRIME) rocker switch. The prime position on the switch is momentary. The boost position is continuous. The boost pump operates on 8 VDC supplied through the 5-amp FUEL PUMP circuit breaker on Main Bus. Serials T-000 & subs: Mounted on the center console (adjacent to the fuel selector valve) is a Fuel Pump LOW BOOST-OFF-HIGH BOOST/PRIME rocker switch. The boost pump operates on 8 VDC supplied through the 5-amp FUEL PUMP circuit breaker on Main Bus. Serials -000 thru -077 before SB -7-0: A fuel pressure based system is used to control boost pump operation. Both positions of the pump normally operate on the low-speed setting. For engine priming, a pressure actuated switch located on the fuel injection distribution manifold allows the pump to run on high speed when fuel system pressure is below PSI. This allows rapid priming of the fuel system for start- All 8-0 Page 5 Jun 00
MODELS SR AND SRT ing. Once the fuel system is primed, the electric pump is switched to the low-speed setting by the pressure switch. The boost position operates the electric pump at the low-speed setting only, regardless of fuel system pressure. Serials -000 thru -077 after SB -7-0, 078 & subs w/o Perspective Avionics: An oil pressure based system is used to control boost pump operation. The oil pressure/oil temperature gauge provides a signal to the starting circuit/dau to generate a ground for the oil annunciator and the fuel system. This system allows the fuel pump to run at the prime (high speed) when the engine oil pressure is less than 0 PSI. Whenever the engine oil pressure exceeds 0 PSI, pressing the prime switch will have no effect. The boost position energizes the boost pump in low-speed mode regardless of oil pressure to deliver a continuous 4-6 psi boost to the fuel flow for vapor suppression in a hot fuel condition. Serials -06 & subs w/ Perspective Avionics: An oil pressure based system is used to control boost pump operation. The oil pressure gauge provides a signal to the GEA to allow the fuel pump to run at the prime (high speed) when the engine oil pressure is less than 0 PSI. Whenever the engine oil pressure exceeds 0 PSI, pressing the prime switch will have no effect. The boost position energizes the boost pump in low-speed mode regardless of oil pressure to deliver a continuous 4-6 psi boost to the fuel flow for vapor suppression in a hot fuel condition. Serials T-000 & subs: A manifold pressure/rpm based system is used to control boost pump operation. The manifold pressure sensor provides a signal to the GEA to allow the fuel pump to run at the prime/ high boost (high speed) when the engine manifold pressure is greater than 4 Hg. Additionally, the engine RPM speed sensor provides a signal to the GEA to allow the fuel pump to run at the prime/high boost (high speed) when starting the airplane. Whenever the engine manifold pressure is less than 4 Hg and engine RPM is greater than 500 RPM, pressing the prime switch energizes the boost pump in low-speed mode. A fuel tank selector valve is installed in the center console between the crew seats, and is isolated from the cabin in case of leakage. The valve has a left, right, and off position. Each position has a positive detent. A knob is located at the top of the handle, and must be pulled to switch the valve to the off position; the valve can be rotated back to on without any further action. The selector valve can be switched between left and right fuel tanks by simply rotating the valve. The valve handle points in the direction of the tank being selected. The selector valve only allows feed from one tank at a time. Drain hoses are provided for the auxiliary fuel pump, gascolator, engine driven fuel pump, fuel injection manifold (spider), and the engine manifolds (cylinder heads). Drain hoses are routed to a drain manifold located on the bottom center of the firewall. A check valve is installed on the cylinder drain manifold to prevent loss of manifold pressure. The valve closes when manifold pressure is below ambient pressure. An aft side firewall fuel enclosure, and a selector valve enclosure prevent fuel from leaking into the cabin. Note: When servicing fuel system pipe thread fittings, apply a small amount of grease (MIL-G- 600 Type ) to the external threads. 8-0 Page 0 Feb 0 All
MODELS SR AND SRT. MAINTENANCE PRACTICES A. Gascolator - Serials -000 thru -709, -70 thru -40 after SB X-8-08 R or higher, -4 & subs, T-000 & subs (See Figure 8-0) () Servicing - Gascolator (a) Set fuel selector valve to OFF position. (b) Using fuel sampler, drain fuel from gascolator and drain tube. (Refer to -0) (c) Disconnect drain tube nut securing drain tube to drain fitting. Note: To aid disassembly, lightly tap on side of gascolator or rotate bowl while pulling apart to loosen o-ring seal. (d) (e) (f) (g) (h) (i) (j) (k) (l) Remove drain fitting and Stat-O-Seal washer securing gascolator bowl to base. Remove retaining ring securing filter screen to gascolator base. Soak fuel filter screen in approved fuel to loosen contaminates. Using compressed air, blow from the inside of fuel filter screen to the outside to remove contaminates. Position filter screen to gascolator base and secure with retaining ring. Install new o-ring to gascolator base. Position gascolator bowl to base and secure with drain fitting and new Stat-O-Seal washer. Connect drain tube nut securing drain tube to drain fitting. Set fuel selector valve to ON position. () Removal - Gascolator (a) Disconnect battery. (Refer to 4-0) (b) Set fuel selector valve to OFF position. (c) Using fuel sampler, drain fuel from gascolator and drain tube. (Refer to -0) (d) Disconnect inlet and outlet lines from gascolator. (e) Disconnect drain tube nut securing drain tube to drain fitting. (f) Remove screws and washers securing gascolator to mounting bracket. Remove gascolator from airplane. () Disassembly - Gascolator Note: To aid disassembly, lightly tap on side of gascolator or rotate bowl while pulling apart to loosen o-ring seal. (a) Remove drain fitting and Stat-O-Seal washer securing gascolator bowl to base. (b) Remove retaining ring securing filter screen to gascolator base. (c) Remove union fittings and o-rings from gascolator base inlet and outlet connectors. (4) Assembly - Gascolator (a) Install new o-rings to union fittings. (b) Install union fittings to gascolator base inlet and outlet connectors. (c) Position filter screen to gascolator base and secure with retaining ring. (d) Install new o-ring to gascolator base. (e) Position gascolator bowl to base and secure with drain fitting and new Stat-O-Seal washer. (5) Installation - Gascolator (a) Position gascolator to mounting bracket and loosely secure with screws and washers. (b) Connect drain tube nut securing drain tube to drain fitting. (c) Connect inlet and outlet lines to gascolator. (d) Tighten screws and washers securing gascolator to mounting bracket. (e) Set fuel selector valve to ON position. Serials -000 thru -709, -70 thru -40 after SB X-8-08 R or higher, -4 & subs, T- 000 & subs 8-0 Page 5 Jun 00
MODELS SR AND SRT (f) Inspect gascolator and fuel lines for signs of leakage. (g) Connect battery. (Refer to 4-0) 8-0 Page 4 5 Jun 00 Serials -000 thru -709, -70 thru -40 after SB X-8-08 R or higher, -4 & subs, T- 000 & subs
MODELS SR AND SRT 5 0 0 FIREWALL 4 4 4 5 6 7 8 DRAIN MANIFOLD NOTE Serials -70 thru -40 after SB X-8-08 R: Lock washer installation. If omitted, install screw with Loctite 4. 9 0 Serials -70 thru -40 after SB X-8-08 R or higher, Serials -000 thru -709, -4 & subs w/o Perspective Avionics. LEGEND. Base. O-Ring. Fuel Filter Screen 4. Retaining Ring 5. Bowl 6. Stat-O-Seal Washer 7. Drain Fitting 8. Drain Tube 9. Nut 0. Washer. Drain Valve. Screw. Bracket 4. Union Fitting 5. Lock Washer SR_MM8_5F Figure 8-0 Gascolator Assembly - Serials -000 thru -709, -4 & subs w/o Perspective (Sheet of ) Serials -000 thru -709, -4 & subs w/o Perspective 8-0 Page 5 5 Jun 00
MODELS SR AND SRT 0 FIREWALL 4 4 4 DRAIN MANIFOLD 5 8 6 7 9 0 8 Figure 8-0 Gascolator Assembly - Serials -4 & subs w/ Perspective, T-000 & subs (Sheet of ) 8-0 Page 6 5 Jun 00 Serials T-000 & subs. 9 0 Serials -06 thru -40 w/ Perspective Avionics after SB X-8-08 R or higher, Serials -4 & subs w/ Perspective Avionics. DRAIN MANIFOLD LEGEND. Base. O-Ring. Fuel Filter Screen 4. Retaining Ring 5. Bowl 6. Stat-O-Seal Washer 7. Drain Fitting 8. Drain Tube 9. Nut 0. Washer. Drain Valve. Screw. Bracket 4. Union Fitting SR_MM8_0 Serials -4 & subs w/ Perspective, T-000 & subs
MODELS SR AND SRT B. Gascolator - Serials -70 thru -40 before SB X-8-08 R or higher (See Figure 8-0) () Servicing - Gascolator (a) Set fuel selector valve to OFF position. (b) Using fuel sampler, drain fuel from gascolator and drain tube. (Refer to -0) (c) Disconnect drain tube nut securing drain tube to drain fitting. (d) Remove screws and washers securing heat shield to gascolator bracket. (e) Remove safety wire securing gascolator bowl to base. (f) Rotate gascolator bowl from base. (g) Remove filter element from gascolator base. Note: Filter element can not be cleaned and must be replaced upon evidence of clogging (red indicator pin pops up) or at scheduled inspection intervals. (h) Position new filter element into gascolator base. (i) Install new o-ring to gascolator base. (j) Rotate gascolator bowl onto base. (k) Secure gascolator bowl to base with safety wire. (l) Position heat shield to gascolator bracket and secure with screws and washers. (m) Connect drain tube nut securing drain tube to drain fitting. (n) Set fuel selector valve to ON position. () Removal - Gascolator (a) Remove upper and RH lower engine cowling. (Refer to 7-0) (b) Disconnect battery. (Refer to 4-0) (c) Set fuel selector valve to OFF position. (d) Using fuel sampler, drain fuel from gascolator and drain tube. (Refer to -0) (e) Remove screws and washers securing heat shield to gascolator bracket. (f) Disconnect inlet and outlet lines from gascolator. (g) Disconnect drain tube nut securing drain tube to drain fitting. (h) Remove screws and washers securing gascolator to mounting bracket. (i) Serials -06 thru -40 w/ Perspective Avionics: Disconnect gascolator sensor from airplane harness. (j) Remove gascolator from airplane. () Disassembly - Gascolator (a) Remove drain fitting and Stat-O-Seal washer securing drain tube to gascolator base. (b) Remove safety wire securing gascolator bowl to base. (c) Rotate gascolator bowl from base. (d) Remove filter element from gascolator base. (e) Remove union fittings and o-rings from gascolator base inlet and outlet connectors. (4) Assembly - Gascolator (a) Install new o-rings to union fittings. (b) Install union fittings to gascolator base inlet and outlet connectors. (c) Position filter element into gascolator base. (d) Apply a light coat of engine oil to new o-ring. Install new o-ring to gascolator base. (e) Rotate gascolator bowl onto base. (f) Secure gascolator bowl to base with safety wire. (g) Install drain fitting and new Stat-O-Seal washer securing drain tube to gascolator base. Serials -70 thru -40 before SB X-8-08 R or higher 8-0 Page 7 May 0
MODELS SR AND SRT (5) Installation - Gascolator (a) Serials -06 thru -40 w/ Perspective Avionics: Connect gascolator sensor to airplane harness. (b) Position gascolator to mounting bracket and loosely secure with screws and washers. (c) Connect drain tube nut securing drain tube to drain fitting. (d) Connect inlet and outlet lines to gascolator. (e) Position heat shield to gascolator bracket and secure with screws and washers. (f) Tighten screws and washers securing gascolator to mounting bracket. (g) Set fuel selector valve to ON position. (h) Inspect gascolator and fuel lines for signs of leakage. (i) Connect battery. (Refer to 4-0) (j) Install upper and RH lower engine cowling. (Refer to 7-0) 8-0 Page 8 5 Jun 00 Serials -70 thru -40 before SB X-8-08 R or higher
MODELS SR AND SRT 5 9 9 FIREWALL 5 9 4 5 6 4 7 DRAIN MANIFOLD NOTE 8 9 Filter element can not be cleaned and must be replaced upon evidence of clogging (red indicator pin pops up) or at scheduled inspection intervals. 0 Serials -70 thru -05, -06 thru -40 w/o Perspective Avionics before SB X-8-08 R or higher. LEGEND. Base. O-Ring. Filter Element 4. Bowl 5. Stat-O-Seal Washer 6. Drain Fitting 7. Drain Tube 8. Nut 9. Washer 0. Drain Valve. Screw. Bracket. Heat Shield 4. Clamp 5. Union Fitting SR_MM8_585C Figure 8-0 Gascolator Assembly - Serials -70 thru -40 w/o Perspective before SB X-8-08 R or higher (Sheet of ) Serials -70 thru -40 w/o Perspective before SB X-8-08 R or higher 8-0 Page 9 5 Jun 00
MODELS SR AND SRT 9 FIREWALL 5 9 5 4 5 6 4 7 DRAIN MANIFOLD NOTE 8 9 0 Filter element can not be cleaned and must be replaced upon evidence of clogging (red indicator pin pops up) or at scheduled inspection intervals. Serials -06 thru -40 w/ Perspective Avionics before SB X-8-08 R or higher. LEGEND. Base. O-Ring. Filter Element 4. Bowl 5. Stat-O-Seal Washer 6. Drain Fitting 7. Drain Tube 8. Nut 9. Washer 0. Drain Valve. Screw. Bracket. Heat Shield 4. Clamp 5. Union Fitting SR_MM8_895A Figure 8-0 Gascolator Assembly - Serials -06 thru -40 w/ Perspective before SB X-8-08 R or higher (Sheet of ) 8-0 Page 0 5 Jun 00 Serials -06 thru -40 w/ Perspective before SB X-8-08 R or higher
MODELS SR AND SRT C. Electric Fuel Pump (See Figure 8-0) () Removal - Electric Fuel Pump (a) Disconnect battery. (Refer to 4-0) (b) Set fuel selector valve to OFF position. (c) Disconnect inlet tube from fuel pump. (d) Disconnect outlet tube from fuel pump. Drain fuel from tube. (e) Disconnect drain hose from fuel pump. (f) Disconnect fuel pump wires. (g) Loosen screws on clamps securing fuel pump to firewall. Remove fuel pump from airplane. () Installation - Electric Fuel Pump CAUTION: If fittings were removed from fuel pump, install fittings using new o-rings. (a) Position fuel pump to firewall and loosely secure with clamps. (b) Connect inlet tube to fuel pump. (c) Connect outlet tube to fuel pump. (d) Connect drain hose to fuel pump. (e) Connect fuel pump wires. (f) Tighten clamps securing fuel pump to firewall. Torque screws to 6.0-8.0 in-lb (0.68-0.90 Nm). (g) Connect battery. (Refer to 4-0) () Functional Test - Electric Fuel Pump Leak Check (a) Acquire necessary tools, equipment, and supplies. Description P/N or Spec. Supplier Purpose Collection Container - Any Source Collect fluid. (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) Set BAT, BAT, and AVIONICS switches to OFF positions. Serials w/ Perspective Avionics: Remove engine cowling. (Refer to 7-0) Remove clamp securing fuel pump drain hose to tee. Position fuel pump drain hose to collection container. Serials w/o Perspective Avionics: Position collection container below fuel pump drain hose on right-hand side of drain manifold. Set throttle control lever to full aft position (IDLE). Set mixture control lever to full aft position (CUTOFF). Set BAT switch to ON position. SR Serials: Press and hold PRIME on fuel pump switch for minimum of twenty seconds. SRT Serials: Press and hold HIGH BOOST/PRIME on fuel pump switch for minimum of twenty seconds. Set BAT switch to OFF position. Verify no fuel has leaked into collection container. All Note: Fuel may discharge from engine cylinder drain hose or left-hand drain manifold. If discharge is found, verify it originates in electric fuel pump. It may be necessary to connect additional hose to drain manifold to isolate fuel from electric fuel pump drain hose. 8-0 Page 0 Jan 06
MODELS SR AND SRT (l) (m) If fuel is present in collection container, replace electric fuel pump. Serials w/ Perspective Avionics: Install clamp securing fuel pump drain hose to tee. Install engine cowling. (Refer to 7-0) 8-0 Page 0 Jan 06 All
MODELS SR AND SRT D. Fuel Pump Switch (See Figure 8-04) () Removal - Fuel Pump Switch (a) Set BAT, BAT, and AVIONICS switches to OFF positions. (b) Pull FUEL PUMP circuit breaker. (c) Remove LH mid console trim panel. (Refer to 5-0) (d) Identify and disconnect wires from fuel pump switch. (e) Compress retainers securing switch to center console and push up to remove switch from airplane. () Installation - Fuel Pump Switch (a) Position switch to center console, compress retainers, and push down to secure. (b) Identify and connect wires to fuel pump switch. (c) Install LH mid console trim panel. (Refer to 5-0) (d) Reset FUEL PUMP circuit breaker. All 8-0 Page 0 Jan 06
MODELS SR AND SRT FIREWALL 4 IN OUT 5 6 DRAIN MANIFOLD LEGEND. Fuel Pump. Bracket. Clamp 4. O-ring 5. Nipple 6. Drain Tube Serials w/o Perspective Avionics. SR_MM8_5D 8-0 Page 4 0 Jan 06 Figure 8-0 Electric Fuel Pump - Serials w/o Perspective Avionics (Sheet of ) Serials w/o Perspective Avionics
MODELS SR AND SRT FIREWALL OUT 4 IN 5 6 8 7 DRAIN MANIFOLD Serials -06 & subs w/ Perspective Avionics. LEGEND. Fuel Pump. Bracket. Clamp 4. O-ring 5. Nipple 6. Drain Tube 7. Tee 8. Clamp Figure 8-0 Electric Fuel Pump - Serials -06 & subs w/ Perspective Avionics (Sheet of ) Serials -06 & subs w/ Perspective Avionics SR_MM8_89C 8-0 Page 5 0 Jan 06
MODELS SR AND SRT FIREWALL OUT 4 IN 5 6 7 6 DRAIN MANIFOLD LEGEND. Fuel Pump. Bracket. Clamp 4. O-ring 5. Nipple 6. Drain Tube 7. Tee Serials T-000 & subs. SR_MM8_A 8-0 Page 6 0 Jan 06 Figure 8-0 Electric Fuel Pump - Serials T-000 & subs (Sheet of ) Serials T-000 & subs
MODELS SR AND SRT E. Selector Valve - Serials -000 thru -0599 (See Figure 8-04) () Removal - Selector Valve WARNING: Disconnect the battery prior to servicing the selector valve. (a) Disconnect battery. (Refer to 4-0) (b) Remove crew seats. (Refer to 5-0) (c) Remove LH and RH mid console trim panels. (Refer to 5-0) (d) Remove screw securing fuel selector knob to shaft of fuel selector valve. (e) Remove screws, washers, and nuts securing selector valve to engine control panel. (f) Remove screws securing engine control panel to center console. CAUTION: Use care not to strain or bend attaching wires and components when lifting engine control panel. (g) Carefully lift engine control panel just enough to allow removal of selector valve shaft. (h) Remove screws and washers securing front panel of selector valve enclosure. (i) Remove screws and washers securing side panels and gaskets to selector valve enclosure. (j) Disconnect fuel supply and return lines from selector valve. (k) Remove screws and washers securing selector valve to top enclosure panel. (l) Remove screws, washers, and nuts securing selector valve to bottom enclosure panel. (m) Remove fuel selector valve from airplane. () Installation - Selector Valve (a) Acquire necessary tools, equipment, and supplies. Description P/N or Spec. Supplier Purpose Extrusion Gun Sealant MIL-S-880 Type Class B CS04 C.B GC408B P/S 890B PR440B EC675B AC-40B Chem Seal - Flame Master Goal PRC Aerospace Sealants PRC Aerospace Sealants M Dynamold Aerospace Faying surface seal fuel system enclosure in cabin. (b) (c) (d) Position selector valve assembly to bottom enclosure panel and secure with screws, washers, and nuts. Install screws and washers securing selector valve to top enclosure panel. Connect fuel supply and return lines to selector valve. WARNING: Fuel line grommets seal fuel and vapors inside the selector valve enclosure. Ensure grommets are properly installed to prevent fuel from entering cabin. (e) (f) Verify fuel line grommets are flat against interior and exterior surfaces of the selector valve enclosure. Fay surface seal front enclosure panel to top and bottom enclosure panels. Secure front enclosure panel with screws and washers. (Refer to 0-0) Serials -000 thru -0599 8-0 Page 7 0 Jan 06
MODELS SR AND SRT WARNING: Installed gaskets must have equal overlap on all enclosure panels to prevent fuel or vapor leaks from entering cabin. (g) Place selector valve enclosure side panels and gaskets into position and secure with screws, washers and nuts. CAUTION: Use care not to strain or bend attaching wires and components when lifting engine control panel. (h) Carefully lift engine control panel just enough to allow installation of selector valve shaft. (i) Install screws securing engine control panel to center console. (j) Pressure check complete fuel system. (Refer to 8-0) (k) Inspect selector valve and enclosure for any signs of potential fuel leakage. (l) Install LH and RH mid console trim panels. (Refer to 5-0) (m) Install crew seats. (Refer to 5-0) (n) Connect battery. (Refer to 4-0) 8-0 Page 8 0 Jan 06 Serials -000 thru -0599
MODELS SR AND SRT F. Selector Valve - Serials -0600 & subs, T-000 & subs (See Figure 8-04) () Removal - Selector Valve WARNING: Disconnect the battery prior to servicing the selector valve. (a) Disconnect battery. (Refer to 4-0) (b) Remove crew seats. (Refer to 5-0) (c) Remove LH and RH mid console trim panels. (Refer to 5-0) (d) Remove engine control panel from center console. Remove flap switch assembly and LEDs from engine control panel. (Refer to 7-50) Remove fuel pump switch from engine control panel. (Refer to 8-0) Serials -0600 & subs w/o Perspective Avionics: Remove screw and nut securing power level knob to power lever. 4 Serials -06 & subs w/ Perspective Avionics, T-000 & subs: Remove screws securing power level knob to power lever. 5 Remove screw securing mixture control knob to mixture control lever. 6 Remove screw securing fuel selector knob to shaft of fuel selector valve. 7 Remove screws, washers, and nuts securing selector valve to engine control panel. 8 Serials -000 thru -848, T-000 thru T-08: Disconnect fuel quantity indicator wire harness. 9 Remove screws, washers, and nuts securing engine control panel to center console. (e) Remove screws, washers and nuts securing panel and gasket to selector valve enclosure. (f) Remove screws securing top panel of selector valve enclosure. (g) Disconnect fuel supply and return lines from selector valve. (h) Remove screws securing selector valve to selector valve enclosure. (i) Remove selector valve assembly from airplane. () Installation - Selector Valve (a) Position selector valve assembly to enclosure and secure with screws. (b) Connect fuel supply and return lines to selector valve. WARNING: Fuel line grommets seal fuel and vapors inside the selector valve enclosure. Ensure grommets are properly installed to prevent fuel from entering cabin. (c) (d) (e) (f) Verify fuel line grommets are flat against interior and exterior surfaces of the selector valve enclosure. Place top panel of selector valve enclosure into position and secure with screws. Place gasket and front panel of selector valve enclosure into position and secure with screws, washers, and nuts. Install engine control panel to center console. Install screws, washers, and nuts securing engine control panel to center console. Serials -000 thru -848, T-000 thru T-08: Connect fuel quantity indicator wire harness. Install screws, washers, and nuts securing selector valve to engine control panel. 4 Install screw securing fuel selector knob to shaft of fuel selector valve. 5 Install screw securing mixture control knob to mixture control lever. 6 Serials -0600 & subs w/o Perspective Avionics: Install screw and nut securing power level knob to power lever. 7 Serials -06 & subs w/ Perspective Avionics, T-000 & subs: Install screws securing power level knob to power lever. Serials -0600 & subs, T-000 & subs 8-0 Page 9 0 Jan 06
MODELS SR AND SRT 8 Install fuel pump switch to engine control panel. (Refer to 8-0) 9 Install flap switch assembly and LEDs to engine control panel. (Refer to 7-50) (g) Pressure check complete fuel system. (Refer to 8-0) (h) Inspect selector valve and enclosure for any signs of potential fuel leakage. (i) Install LH and RH mid console trim panels. (Refer to 5-0) (j) Install crew seats. (Refer to 5-0) (k) Connect battery. (Refer to 4-0) 8-0 Page 0 0 Jan 06 Serials -0600 & subs, T-000 & subs
MODELS SR AND SRT 4 4 FIREWALL 5 7 8 9 9 8 6 8 7 5 LEGEND. Screw. Washer. Nut 4. Selector 5. Upper Detent Assembly 6. Shaft 7. Selector Valve 8. Top Panel 9. Front Panel 0. Side Panel. Gasket. Bottom Panel. Grommet 4. Switch 5. Return Line 6. Supply Line 7. Rivnut 8. Spring Clamp 9. Drain Tube 0. Cable Tie. Loop Clamp. Bracket. Fuel Enclosure, Firewall 0 6 0 9 Serials -000 thru -0599. 5 6 8 7 7 8 6 5 SR_MM8_9B Figure 8-04 Fuel Selector Valve Installation - Serials -000 thru -0599 (Sheet of ) Serials -000 thru -0599 8-0 Page 0 Jan 06
MODELS SR AND SRT 4 4 FIREWALL 7 8 9 9 8 6 5 8 7 7 6 5 6 5 LEGEND. Screw. Washer. Nut 4. Selector 5. Upper Detent Assembly 6. Shaft 7. Selector Valve 8. Top Panel 9. Front Panel. Gasket. Grommet 4. Switch 5. Return Line 6. Supply Line 7. Rivnut 8. Spring Clamp 9. Drain Tube 0. Cable Tie. Loop Clamp. Bracket. Fuel Enclosure, Firewall 4. Selector Valve Enclosure 4 5 6 8 0 9 8 7 7 SR_MM8_75 8-0 Page 0 Jan 06 Figure 8-04 Fuel Selector Valve Installation - Serials -0600 & subs, T-000 & subs (Sheet of ) Serials -0600 & subs, T-000 & subs
MODELS SR AND SRT G. Cabin Fuel System Fuel Enclosure (Firewall) () Removal - Cabin Fuel System Fuel Enclosure WARNING: Disconnect the battery prior to servicing the selector valve. (a) Disconnect battery. (Refer to 4-0) (b) Slide spring clamp downward on drain tube. (c) Disconnect drain tube from fitting on enclosure. (d) Remove screws and washers securing bracket, enclosure, and gasket to firewall. (e) Disconnect fuel supply and return lines from fittings inside fuel enclosure. Note: To remove fuel enclosure from airplane, the fuel lines at the forward side of selector valve must be disconnected. (f) Disconnect fuel supply and return lines from forward side of selector valve. (Refer to 8-0) (g) Remove screws, washers, and nuts securing loop clamps to center console. (h) Slide fuel enclosure off fuel supply and return lines. () Installation - Cabin Fuel System Fuel Enclosure (a) Slide fuel enclosure over fuel supply and return lines. (b) Connect fuel enclosure supply and return fuel lines. WARNING: Fuel line grommets seal fuel and vapors inside the selector valve enclosure. Ensure grommets are properly installed to prevent fuel from entering the cabin. (c) Verify fuel line grommets are flat against interior and exterior surfaces of the selector valve enclosure. WARNING: Installed gaskets must have equal overlap on all enclosure panels to prevent fuel or vapor leaks from entering cabin. (d) (e) (f) (g) (h) Position bracket, gasket, and enclosure to firewall and secure with screws and washers. Slide drain tube over fitting on enclosure. Slide spring clamp upward on drain tube until clamp is centered over fitting. Connect fuel supply and return lines to forward side of selector valve. Reassemble selector valve enclosure. (Refer to 8-0) Install screws, washers, and nuts securing loop clamps to center console. (i) Pressure check complete fuel system. (Refer to 8-0) (j) Inspect fuel enclosures for any signs of potential fuel leakage. (k) Connect battery. (Refer to 4-0) All 8-0 Page 0 Jan 06
MODELS SR AND SRT H. Supply Tube Assembly (See Figure 8-05) () Removal - Supply Tube Assembly (a) Drain corresponding fuel tank for side being serviced. (Refer to -0) (b) Serials -000 thru -47: Remove appropriate lower LH or RH wing root fairing. (Refer to 5-50) (c) Serials -48 & subs, T-000 & subs: Remove access panels LW and RW. (Refer to 06-00) CAUTION: Do not rotate 90 fuel tank fittings during removal of supply tube. (d) Serials -000 thru -47: Remove screw securing restraint clip to clamp on supply tube assembly. (e) Serials -48 & subs, T-000 & subs: Remove screw, washers, and spacer securing clamp on supply tube assembly to rib. (f) Disconnect end fittings securing supply tube assembly to fuel line. Remove supply tube assembly. () Installation - Supply Tube Assembly CAUTION: Do not rotate 90 fuel tank fittings during installation of supply tube. (a) Serials -000 thru -04 after SB X-8-05, 04 & subs: At end fittings of fuel line, position supply tube assembly with HINGE label facing upward and flow arrow indicator pointing forward. (b) Install supply tube assembly to end fittings of fuel line. Torque nuts to 0-60 in-lb (5.98-9.7 Nm) and apply torque seal to both connections. (c) Position clamp on supply tube assembly at restraint clip. (d) Serials -000 thru -47: Install screw securing restraint clip to clamp on supply tube assembly. (e) Serials -48 & subs, T-000 & subs: Install screw, washers, and spacer securing clamp on supply tube assembly to rib. (f) Fill the corresponding fuel tank. (Refer to -0) (g) Perform Functional Test - Bleed Fuel Lines. (Refer to 8-0) CAUTION: To prevent damage from prop wash, removed wing root fairing must be fixtured into installed positions. 8-0 Page 4 0 Jan 06 (h) Using tarp tape, secure removed lower wing root fairing to installation location. (i) Perform Functional Test - Leak Check. (Refer to 8-0) (j) Serials -000 thru -47: Install lower wing root fairing. (Refer to 5-50) (k) Serials -48 & subs, T-000 & subs: Install access panels LW and RW. (Refer to 06-00) (l) Perform Airplane Operational and Functional Check. (Refer to 05-0) () Functional Test - Bleed Fuel Lines (a) Set fuel selector valve to corresponding fuel tank for side being serviced. (b) Set electric fuel pump switch to PRIME position. (c) Hold open gascolator drain valve until fuel flows. (d) Set electric fuel pump switch to OFF position. (e) Verify supply tube assembly shows no signs of leakage. (4) Functional Test - Leak Check (a) Set fuel selector valve to corresponding fuel tank for the side being serviced. All
MODELS SR AND SRT (b) (c) (d) (e) (f) (g) (h) Set BAT switch to ON position. Start engine in accordance with Pilot s Operating Handbook procedures. Allow continuous engine run-time for a minimum of three minutes. Remove tape securing wing root fairings to airplane. Check fuel line system. Verify supply tube assembly shows no signs of leakage. Verify any air is bled from fuel line system. Shutdown engine in accordance with Pilot s Operating Handbook procedures. Set BAT switch to OFF position. All 8-0 Page 5 0 Jan 06
MODELS SR AND SRT 5 7 4 FUEL LINE 4 6 Serials -000 thru -000. Serials -00 thru -47. 4 6 NOTE Serials Serials -000 thru -04 after SB X-8-05, -04 & subs: At end fittings of fuel line, position replacement supply tube assembly with HINGE label facing upward and flow arrow indicator pointing forward. Serials -000 thru -04 before SB X-8-05, Serials T-000 & subs: Supply tube assembly does not include a check valve. LEGEND. Supply Tube Assembly. Screw. Washer 4. Clamp 5. Spacer 6. Clip 7. Check Valve SR_MM8_99B 8-0 Page 6 0 Jan 06 Figure 8-05 Supply Tube Assembly Installation All